Vulnerability record · CVE-2025-11710 · published 14 October 2025

CVE-2025-11710: Mozilla firefox information exposure vulnerability

Mozilla · Firefox

A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks of its memory to the compromised process. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.

9.8 CVSS 3.1 Critical EPSS 0.42% · top 66.0% CWE-200 · Information exposure

9.8CVSS 3.1 base score

0.42%EPSS exploitation probability, 30 days

NoNot in CISA KEV

2Affected product versions listed by NVD

8References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Firefox Mozilla

Thunderbird Mozilla

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1989899	Issue TrackingPermissions Required
https://www.mozilla.org/security/advisories/mfsa2025-81/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-82/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-83/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-84/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-85/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-11710), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.